See this legally free ebook:

  • The Gospel According to Saint Matthew, with an Explanatory and Critical Commentary, by Anthony John Maas, S.J. (St. Louis: B. Herder, 1898). With Imprimatur. Available in multiple formats at Internet Archive and Open Library.

On the Feast of St. Matthew the Apostle in the Roman Rite. For other legally free ebooks, you may access the List of Free eBooks (Arranged by Title) and the List of Free eBooks (Grouped by Subject). Blessed be God in His angels and in His saints!